ReadMe file updated with KB details.

Author: jayaleshwari

README.md

@@ -1,2 +1,52 @@
-# accordion-xamarin.forms-4.0-framework-issue
-How to overcome the crash Java.Lang.NullPointerException in Xamarin.Forms Accordion (SfAccordion)
+# How to overcome the crash Java.Lang.NullPointerException in Xamarin.Forms Accordion (SfAccordion)
+
+In [SfAccordion](https://help.syncfusion.com/xamarin/accordion/getting-started?), When loading Label as direct children of [Header](https://help.syncfusion.com/cr/xamarin/Syncfusion.Expander.XForms~Syncfusion.XForms.Accordion.AccordionItem~Header.html?) or [Content](https://help.syncfusion.com/cr/xamarin/Syncfusion.Expander.XForms~Syncfusion.XForms.Accordion.AccordionItem~Content.html?) of [AccordionItem](https://help.syncfusion.com/cr/xamarin/Syncfusion.Expander.XForms~Syncfusion.XForms.Accordion.AccordionItem.html?), then it will lead to exception in Xamarin.Forms 4.0 and above version.
+
+However, the issue can be resolved in application level by loading Label inside Grid in **AccordionItem.Header** and **AccordionItem.Content**.
+
+You can also refer the following article.
+
+https://www.syncfusion.com/kb/11432/how-to-overcome-the-crash-java-lang-nullpointerexception-in-xamarin-forms-accordion
+
+**XAML**
+
+Loading Label inside **Header** and **Content** in Grid
+``` xml
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:syncfusion="clr-namespace:Syncfusion.XForms.Accordion;assembly=Syncfusion.Expander.XForms"
+             x:Class="AccordionXamarin.MainPage" Padding="{OnPlatform iOS='0,40,0,0'}">
+ 
+    <ContentPage.Content>
+        <syncfusion:SfAccordion ExpandMode="MultipleOrNone" >
+            <syncfusion:SfAccordion.Items>
+                <syncfusion:AccordionItem>
+                    <syncfusion:AccordionItem.Header>
+                        <Grid>
+                            <Label Text="Cheese burger" HeightRequest="50" VerticalTextAlignment="Center"/>
+                        </Grid>
+                    </syncfusion:AccordionItem.Header>
+                    <syncfusion:AccordionItem.Content>
+                        <Grid Padding="10" BackgroundColor="NavajoWhite">
+                            <Label Text="Hamburger accompanied with melted cheese. The term itself is a portmanteau of the words cheese and hamburger. The cheese is usually sliced, then added a short time before the hamburger finishes cooking to allow it to melt." VerticalTextAlignment="Center"/>
+                        </Grid>
+                    </syncfusion:AccordionItem.Content>
+                </syncfusion:AccordionItem>
+                <syncfusion:AccordionItem>
+                    <syncfusion:AccordionItem.Header>
+                        <Grid>
+                            <Label Text="Veggie burger" HeightRequest="50" VerticalTextAlignment="Center"/>
+                        </Grid>
+                    </syncfusion:AccordionItem.Header>
+                    <syncfusion:AccordionItem.Content>
+                        <Grid Padding="10" BackgroundColor="NavajoWhite">
+                            <Label Text="Veggie burger, garden burger, or tofu burger uses a meat analogue, a meat substitute such as tofu, textured vegetable protein, seitan (wheat gluten), Quorn, beans, grains or an assortment of vegetables, which are ground up and formed into patties." VerticalTextAlignment="Center"/>
+                        </Grid>
+                    </syncfusion:AccordionItem.Content>
+                </syncfusion:AccordionItem>
+                ...
+            </syncfusion:SfAccordion.Items>
+        </syncfusion:SfAccordion>
+    </ContentPage.Content>
+</ContentPage>
+```